Role of smoking in low birth weight.
D005260:Female; D005317:Fetal Growth Retardation / Q000453:epidemiology / Q000209:etiology*; D006801:Humans; D007230:Infant, Low Birth Weight / Q000254:growth & development*; D007231:Infant, Newborn; D008404:Massachusetts / Q000453:epidemiology; D011247:Pregnancy; D011256:Pregnancy Outcome; D011297:Prenatal Exposure Delayed Effects; D012189:Retrospective Studies; D012306:Risk; D012907:Smoking / Q000009:adverse effects* / Q000453:epidemiology